Gearing for mechanical devices.



J. W. HUGHES.

GEARING FOR MEGHANICAL DEVICES.

APPLICATION FILED DEC. 9, 1913 Patented Jan. 5, 3915.

3 11 under Sm), nu:

iiiacinznmm J HUGHES; k" NAEBEETE, 3?

Application filed Eecemzer 9, 1913. Serial Ho. @fiiME-Q.

vgmnerg;, and

of I: .vaniza, have invanted an l mproyeme Gmring Mechanical Dances, of.wi on following is a specification My inveo fi'o'i re zeaco co gamingfor mechanicai generally, and re lates mom 511221 or spiral i type ofprovemezlts following specific:

I on shown 1? L119 accompany Womb. fox-m part thereoi.

- bination of ele The objeci: of my invention to provide s a helical :orpm-poseof transmitting wl th 2 whmn 1s accompilsne-ci by a novel comtoreduce friction to a Lmimurr: without oi fasting in i e mlssmn.

It, has for a further object to provirie a gear of heii'cai constructionWhiGh iS adapt-- ed to mesh "with of simiiar typo and transmit powerthereto irrespective of Whether or not two ciireotiy 111mm with eachother, that is to say, transmission from one gear to another may take pl(3% even ihougo iho two gears are ongw izwl disposed wish respect toeach other. My invention further oomprohezzds Wheel body having groovesformed in the periphery ihereof which are adapted izo serve 'he purposeof seats retainers for convolution oz oonvolufions of the nova helicalmember or soil which forms the gear teeth, all of so? pa'fs being lockelor held in assembe i v forming o Fzguze partly in s; bodying in"? isecfion on line :z i; 3 represents an eniarged d 2&1! of on of thefastemng devlces; Fig. represents a, plan or a portion 0; the gear; andFig. 5 represents :1 modified form of fastening device.

Referring to the mwings, simiiar numerais of rofe granca inicafiocorresoonding parts. 1 fiesignaes a Wives 50x33; saximbioma Loving a rim:2 saeiiomi i ooufigumtioz suhoiamiaiiy :sembcizcuiar 7 onceof acteither as thus prevent displacement of -the ezzds when each he? mm an ryT a convolution of prov;

ti 9.113. w n 45 2 *a boat; 10? 1119 res rim 2 for if aforesaid ogwe'oinof the 2 l 8 whichai; ends 9 of the bait; suitably aperture serve toclamp the ends o1 the 11 designat 2. located. respect. 1*; i zfiapiod i0on helix {3 W31" .e A projgct 'ihfmli? o 12, whereby tight and a;posiiionmr assfombled oondii-io I11 Zha modification shown 5" Fig. Ihave pros'lciefi a construcxon which 811mlnatas {he damping means forsecuring the ends of the coil, and in place thereof 3 utilize a, singleEng 13 which is transversely bored to receive a pin or key 14 which maya wedge to secure the ends 9, or the Father may bo grooved as shown inFig. 5 to receive a portion 01 the pin am? the gear is m opsmtion.

K have in the foregoing dosoripiozs .bination of the parts in which onlycertain of-the .convolutions of the helix are seated in the groovesembodies a construction within the scope of my invention, and Itherefore do not desire to be limited to the number of grooves or theirrelation to the convolutions of the helix.

It will be apparent from the present disclosure that I have devised acomplete op erative gear structure of a spiral or helical type wherein acoil of material of more or p less yieldingnature is employed to formthe gear teeth and therefore it will be evident that when the said teethmesh with a similar gear the action will be substantially noiseless,free running, Hut yet capable of exciting an enormous power transmittingactlon w1th"a minimum of friction. It will further be apparent that thegear of my invention is designed for use in connection withsubstantially all types of gearing, be-

ing particularly adaptable for transmission gears ofauto'mobiles,hoisting mechanism or like machines.

Havingthus described my invention, what I claim and desire to protect byLetters Patent is 1. In a device of the character stated, a .wheel bodyhaving a circumferential groove in the rimthereof forming-a suitablesurface substantially semi-circular in cross-' section, said surfacehaving a plurality of transverse. grooves therein extending from oneedge to theother, each of said grooves forming a part of the samedielix,a coil of helicalform. having a substantial portion thereof seated insaid grooves, and means to secure said coil in assembled condition.

2. In a device of the character stated, a wheel body having acircumferential groove in the rim thereof forming a suitable surface,said surface having a plurality of.-

transverse grooves therein, a coil of suitable material positioned aboutsaid surface, a substantial portion of the convolutions of said coilbeing seated respectively in said grooves to form a positive powertransmitting means, and means to secure said coil in assembledcondition. 7

3. In a device of the character stated a wheel body having acircumferential groove 1n the rim thereof, forming a suitable surmeanslocated at intervals about said ringfor holding said coil seated in saidgroove.

4. In a device of the character stated, a wheel body having acircumferential-groove in the rim thereof, forming a suitable surface,said surface having a plurality of transverse grooves therein, and apair of substantially radial openings therethrough, certain of saidgrooves forming a part of the same helix, a coil of helical form havinga substantial portion of'each convolution seated in said grooves, andhaving its ends respectively located in said openings, means for lockingsaid ends in'said openings, and

a plurality of hook bolts passing through said rim and engaging saidcoil at a plurality of points to hold said coil in assembled condition'5. A gear consisting of a wheel body havlng an annular groove about itsperiphery and of'approximately semicircular shape in cross section, saidgroove having its walls provided with transverse grooves, said groovesin sinuous form combined with a helical coil of wire arranged in annularform about the body and having the inner loops of the coils fitting intothe transverse sinuous shaped grooves;

6. A gear consisting of a wheel body having an annular groove about itsperiphery and of approximately semi-circular shape in cross section,said groove having its walls provided with transverse. grooves, saidgrooves in sinuous form combined with a helical coil of wire arranged inannular form about the body and hzwing'the inner loops of the coilsfitting into the transverse sinuous shaped grooves, and means forholding the helical wire upon the wheel body and within the transversegrooves thereof.

In testimony of which invention, I hereunto set my hand.

JAMES w. HUGHES. Witnesses:

R. M. HUNTER,

Hermon D. Rnnvn.

